//温暖效果
precision mediump float;
uniform sampler2D vTexture;
varying vec2 aCoord;
const highp vec3 COOL = vec3(0.0,0.0,0.1);

void main() {
    vec4 tempColor = texture2D(vTexture,aCoord);
    gl_FragColor = tempColor + vec4(COOL,0.0);
}

